OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Test conditions
For Vin change
of 1%
(3.3V output)
(Other output)
(3.3V output)
(5V output)
(9V output)
(12V output)
(15V output)
Min
0.1
Max
Units
1
W
±1.5
±1.2
12
20
%
10.5
15
8.3
15
6.8
15
6.3
15
See tolerance envelope graph
0.03
%/°C
50
75
mVp-p
75
100
100
150
100
KHz
Typ
Overload Protection
Under
output
protection
normal
circuit
of
against
operating
these
overload.
conditions,
has
The
the
no
products
simplest
method is to connect a self-recovery fuse in
series at the input end or add a circuit breaker
to the circuit.
Recommended circuit
If you want to further
Load regulation
10% to 100%
load
decrease
the
Output voltage accuracy
Temperature drift
100% full load
(AXXXXD-1W)
20MHz
Ripple & Noise*
(BXXXXD-1W)
Bandwidth
(A/BXX24D-1W)
Switching frequency Full load, nominal input
input/output ripple, an
“LC”
filtering network may
be connected to the input and output ends of the
DC/DC converter, see (Figure 1).
Dual Output
L
L
Vin
Cin
+Vo
Cout
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1.All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.Dual output models unbalanced load:
±5%.
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
Vin
Cin
+Vo
DC DC
(Figure 1)
Cout
GND
TYPICAL CHARACTERISTICS
0V
It should also be noted that the inductance and
the frequency of the
“LC”
filtering network should
be staggered with the DC/DC frequency to avoid
mutual interference. However, the capacitance
of the output filter capacitor must be proper. If
the capacitance is too big, a startup problem
might arise. For every channel of output,
provided the safe and reliable operation is
ensured, the recommended capacitance of its
Operating Temp.( C)
o
filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
RECO MMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
Dual Output
Vin
(VDC)
5
12
15
24
Cin
(uF)
4.7
2.2
2.2
1
Single
Cout
Vout
(uF)
(VDC)
5
10
9
4.7
12
2.2
15
1
Dual
Cout
Vout
(uF)
(VDC)
±5
4.7
±9
2.2
±12
1
±15
0.47
14
1
11
9 8
7
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Single Output
14
1
14
11
7
1
9 8
FO OTPRINT DETAILS
Pin
1
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm( 0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
8
9
11
Single
GND
NC
0V
+Vo
No Pin
Vin
Dual
GND
NC
0V
+Vo
-Vo
Vin
7
9 8
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage
regulation,
over-voltage
and
over-current
protection is a linear voltage regulator with
overheat protection that is connected to the
input or output end in series (Figure 2).
D ual Output
Vin
GND
Single Output
Vin
GND
REG
REG
REG
REG
+Vout
0V
DC DC
REG
-Vout
+Vout
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load is
not less than 10%
of the full load, and that
this product should never be
operated under no load!
If the actual output power is very small, please connect a resistor
with proper resistance at the output end in parallel to increase the load, or use our company’s
products with a lower rated output power (A_D -W25/B_LD-W25 series)
DC DC
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_D-1W & B_LD-1W
A/2-2008
Page 2 of 2
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